公开(公告)号：US11685654B2

公开(公告)日：2023-06-27

申请号：US17450451

申请日：2021-10-08

申请人： NICHIA CORPORATION

发明人： Hisashi Maehara

IPC分类号： H01F1/059 ,  H01F1/032 ,  C01B21/076 ,  H01F1/055

CPC分类号： C01B21/0761 ,  H01F1/059 ,  H01F1/0551 ,  H01F1/0593 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2006/42

摘要： Provided are a method of producing a titanium-containing rare earth-iron-nitrogen anisotropic magnetic powder having good magnetic properties, and secondary particles for a titanium-containing anisotropic magnetic powder. The method includes: obtaining a first precipitate containing R, iron, and titanium by mixing a first precipitating agent with a solution containing R, iron, and titanium, wherein R is at least one selected from Sc, Y, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, and Lu; obtaining a second precipitate containing R and iron by mixing, in the presence of the first precipitate, a second precipitating agent with a solution containing R and iron; obtaining an oxide containing R, iron, and titanium by calcining the second precipitate; obtaining a partial oxide by heat treating the oxide in a reducing gas atmosphere; obtaining alloy particles by reducing the partial oxide; and obtaining an anisotropic magnetic powder by nitriding the alloy particles.

公开(公告)号：US20230144451A1

公开(公告)日：2023-05-11

申请号：US17906446

申请日：2021-03-18

申请人： SHIN-ETSU CHEMICAL CO., LTD.

发明人： Tadao NOMURA ,  Kazuki OTSUKA ,  Masayuki KAMATA

IPC分类号： H01F1/059 ,  B22F3/12 ,  B22F3/24 ,  H01F41/02 ,  C22C38/10

CPC分类号： H01F1/0593 ,  B22F3/12 ,  B22F3/24 ,  H01F41/0293 ,  H01F41/0266 ,  C22C38/10 ,  C22C2202/02

摘要： An anisotropic rare earth sintered magnet represented by the formula (R1-aZra)x(Fe1-b COb)100-x-y(M11-cM2c)y where R is at least one element selected from rare earth elements and Sm is essential; M1 is at least one of V, Cr, Mn, Ni, Cu, Zn, Ga, Al, and Si; M2 is at least one of Ti, Nb, Mo, Hf, Ta, and W; and x, y, a, b, and c each satisfy certain conditions. The anisotropic rare earth sintered magnet includes 80% by volume or more of a main phase composed of a compound of a ThMn12 type crystal, the main phase having an average crystal grain size of 1 μm or more, and containing an R-rich phase and an R(Fe,Co)2 phase in a grain boundary portion. A method for producing the anisotropic rare earth sintered magnet is also described.

公开(公告)号：US5137587A

公开(公告)日：1992-08-11

申请号：US735651

申请日：1991-07-25

申请人： Ludwig Schultz ,  Kurt Schnitzke ,  Joachim Wecker ,  Matthias Katter

发明人： Ludwig Schultz ,  Kurt Schnitzke ,  Joachim Wecker ,  Matthias Katter

IPC分类号： H01F1/053 ,  C04B35/58 ,  H01F1/059 ,  H01F7/02 ,  H01F41/02

CPC分类号： C04B35/645 ,  C04B35/58 ,  H01F1/0593

摘要： A shaped body of anisotropic magnetic material based on the Sm-Fe-N system which has a crystalline, hard magnetic phase with a Th.sub.2 Zn.sub.17 crystal structure, wherein N atoms are incorporated in the crystal lattice, is produced by compacting a powder Sm-Fe preliminary product with an Sm-Fe phase having a magnetically isotropic structure, followed by hot-shaping to provide an intermediate product with a Sm-Fe phase having a magnetically anisotropic structure, followed by heat treating the intermediate product in a nitrogen atmosphere to provide a Sm-Fe-N hard magnetic phase.

摘要翻译： 基于Sm-Fe-N系的成形体的具有Th2Zn17晶体结构的结晶硬相，其中N原子并入晶格中的Sm-Fe-N体系是通过将粉末Sm-Fe初步 具有具有磁各向同性结构的Sm-Fe相的产物，随后热成型以提供具有磁各向异性结构的Sm-Fe相的中间产物，然后在氮气气氛中热处理中间产物以提供Sm -Fe-N硬磁相。

公开(公告)号：US11865623B2

公开(公告)日：2024-01-09

申请号：US16761309

申请日：2019-08-06

申请人： LG Chem, Ltd.

发明人： Jinhyeok Choe ,  Ikjin Choi ,  Hyounsoo Uh ,  Soon Jae Kwon

IPC分类号： B22F9/20 ,  H01F1/059 ,  B22F1/142 ,  B22F1/105

CPC分类号： B22F9/20 ,  B22F1/105 ,  B22F1/142 ,  H01F1/0593

摘要： A magnetic powder and a method for fabricating the same according to an embodiment of the present disclosure are provided. The magnetic powder is powder particles synthesized using a mixture of a rare earth oxide, a raw material, a metal, a metal oxide and a reducing agent, wherein the powder particles are single-phase, the raw material includes at least one of Fe and Co, the metal includes at least one of Ti, Zr, Mn, Mo, V and Si, and the metal oxide includes at least one of MnO2, MoO3, V2O5, SiO2, ZrO2 and TiO2.

公开(公告)号：US09548150B2

公开(公告)日：2017-01-17

申请号：US13786807

申请日：2013-03-06

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Chen Zhou ,  Frederick E. Pinkerton ,  Jan F. Herbst

IPC分类号： H01F1/057 ,  H01F1/058 ,  H01F1/059 ,  H01F1/055

CPC分类号： H01F1/0593

摘要： New magnetic materials containing cerium, iron, and small additions of a third element are disclosed. These materials comprise compounds Ce(Fe12−xMx) where x=1-4, having the ThMn12 tetragonal crystal structure (space group I4/mmm, #139). Compounds with M=B, Al, Si, P, S, Sc, Co, Ni, Zn, Ga, Ge, Zr, Nb, Hf, Ta, and W are identified theoretically, and one class of compounds based on M=Si has been synthesized. The Si cognates are characterized by large magnetic moments (4πMs greater than 1.27 Tesla) and high Curie temperatures (264≦Tc≦305° C.). The Ce(Fe12−xMx) compound may contain one or more of Ti, V, Cr, and Mo in combination with an M element. Further enhancement in Tc is obtained by nitriding the Ce compounds through heat treatment in N2 gas while retaining the ThMn12 tetragonal crystal structure; for example CeFe10Si2N1.29 has Tc=426° C.

摘要翻译： 公开了含有铈，铁和少量添加第三元素的新的磁性材料。 这些材料包括具有ThMn12四方晶系结构（空间群I4 / mmm，＃139）的x = 1-4的化合物Ce（Fe12-xMx）。 理论上确定M = B，Al，Si，P，S，Sc，Co，Ni，Zn，Ga，Ge，Zr，Nb，Hf，Ta和W的化合物，一类基于M = Si 已被合成。 Si同系物的特征在于大磁矩（4πMs大于1.27特斯拉）和高居里温度（264≤Tc≤305℃）。 Ce（Fe12-xMx）化合物可以含有与M元素组合的Ti，V，Cr和Mo中的一种或多种。 通过在N 2气中热处理氮化Ce化合物同时保留ThMn12四方晶体结构，可以进一步提高Tc; 例如CeFe10Si2N1.29具有Tc = 426℃

公开(公告)号：US20160071635A1

公开(公告)日：2016-03-10

申请号：US14844478

申请日：2015-09-03

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Noritsugu SAKUMA ,  Akira KATO ,  Kota WASHIO ,  Hidefumi KISHIMOTO ,  Masao YANO ,  Akira MANABE ,  Masaaki ITO ,  Shunji SUZUKI ,  Kurima KOBAYASHI

IPC分类号： H01F1/03 ,  C22C30/02

CPC分类号： C22C30/02 ,  C22C1/02 ,  C22C30/00 ,  C22C38/00 ,  H01F1/0593

摘要： Provided is a magnetic compound represented by the formula (R(1-x)Zrx)a(Fe(1-y)Coy)bTcMdAe (wherein R represents one or more rare earth elements, T represents one or more elements selected from the group consisting of Ti, V, Mo, and W, M represents one or more elements selected from the group consisting of unavoidable impurity elements, Al, Cr, Cu, Ga, Ag, and Au, A represents one or more elements selected from the group consisting of N, C, H, and P, 0≦x≦0.5, 0≦y≦0.6, 4≦a≦20, b=100−a−c−d, 0

摘要翻译： 提供由式（R（1-x）Zr x）a（Fe（1-y）Coy）bTcMdAe表示的磁性化合物（其中R表示一种或多种稀土元素，T表示一种或多种选自 由Ti，V，Mo和W组成，M表示选自不可避免的杂质元素Al，Cr，Cu，Ga，Ag和Au中的一种或多种元素，A表示选自以下的一种或多种元素： 由N，C，H和P组成，0＆nlE; x＆nlE; 0.5,0和nlE; y＆nlE; 0.6,4和nlE; a＆nlE; 20b = 100-a-c-d，0

公开(公告)号：US20190189314A1

公开(公告)日：2019-06-20

申请号：US16283857

申请日：2019-02-25

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Naoyuki Sanada ,  Masaya Hagiwara ,  Shinya Sakurada

IPC分类号： H01F1/055 ,  H02K7/00 ,  H02K7/18 ,  C22C38/10 ,  C22C38/14 ,  C22C38/08 ,  C22C38/16 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC分类号： H01F1/055 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0557 ,  H01F1/0593 ,  H02K7/003 ,  H02K7/1823

摘要： A magnetic material is expressed by a composition formula: (R1-xZx)aMbTc, and includes a main phase having a ThMn12 crystal structure. In the ThMn12 crystal structure, when an amount of the element Z occupying 2a site is Z2a atomic percent, an amount of the element Z occupying 8i site is Z8i atomic percent, an amount of the element Z occupying 8j site is Z8j atomic percent, and an amount of the element Z occupying 8f site is Z8f atomic percent, Z2a, Z8i, Z8j, and Z8f satisfy (Z8i+Z8j+Z8f)/(Z2a+Z8i+Z8j+Z8f)

公开(公告)号：US20180061539A1

公开(公告)日：2018-03-01

申请号：US15682670

申请日：2017-08-22

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Masaya Hagiwara ,  Tomohiro Yamashita ,  Naoyuki Sanada ,  Yosuke Horiuchi ,  Shinya Sakurada

IPC分类号： H01F1/057 ,  H02K1/02 ,  H02K7/18

CPC分类号： H01F1/0577 ,  B60L2200/26 ,  B60L2220/10 ,  H01F1/0557 ,  H01F1/0593 ,  H02K1/02 ,  H02K1/276 ,  H02K1/2766 ,  H02K7/1823

摘要： An magnetic material is a magnetic material expressed by a composition formula: (R1-xYx)aMbTcAd, which includes a main phase consisting of a ThMn12 type crystal phase. 30 atomic percent or more of the element M in the composition formula is Fe.

公开(公告)号：US20100068512A1

公开(公告)日：2010-03-18

申请号：US12597736

申请日：2008-04-25

申请人： Nobuyoshi Imaoka ,  Masanori Abe ,  Takashi Nakagawa ,  Sasaru Tada

发明人： Nobuyoshi Imaoka ,  Masanori Abe ,  Takashi Nakagawa ,  Sasaru Tada

IPC分类号： B32B5/00 ,  B32B15/00 ,  B05D5/12 ,  H01F1/00 ,  H01F1/28

CPC分类号： C01G49/00 ,  B82Y30/00 ,  C01B21/0602 ,  C01B21/082 ,  C01G49/0018 ,  C01G49/009 ,  C01P2002/52 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/40 ,  C01P2006/42 ,  C01P2006/80 ,  C04B35/58042 ,  C04B35/5805 ,  C04B35/6261 ,  C04B35/62805 ,  C04B35/62897 ,  C04B35/645 ,  C04B35/6455 ,  C04B2235/3852 ,  C04B2235/3895 ,  C04B2235/40 ,  C04B2235/405 ,  C04B2235/465 ,  C04B2235/5436 ,  C04B2235/666 ,  C22C45/02 ,  H01F1/0593 ,  H01F1/0596 ,  H01F1/33 ,  H01F41/0273 ,  Y10T428/265 ,  Y10T428/32

摘要： Disclosed is a magnetic material for a high frequency wave which has high magnetic permeability and small eddy-current loss, particularly a magnetic material for a high frequency wave which can be used suitably in an information device which works in a high frequency field of 1 GHz or higher. Specifically disclosed is a composite magnetic material for a high frequency wave, which comprises a (rare earth element)-(iron)-(nitrogen)-based magnetic material and a (rare earth element)-(iron)-(nitrogen)-based magnetic material whose surface is coated with a ferrite magnetic material.

摘要翻译： 公开了一种具有高磁导率和小涡流损耗的高频波的磁性材料，特别是用于高频波的磁性材料，可以适用于在1GHz的高频场中工作的信息装置 或更高。 具体公开了一种用于高频波的复合磁性材料，其包括（稀土元素） - （铁） - （氮）基磁性材料和（稀土元素） - （铁） - （氮）基 其表面用铁氧体磁性材料涂覆的磁性材料。

公开(公告)号：US20060169360A1

公开(公告)日：2006-08-03

申请号：US10540345

申请日：2004-01-28

申请人： Atsushi Sakamoto ,  Makoto Nakane ,  Hideki Nakamura ,  Akira Fukuno

发明人： Atsushi Sakamoto ,  Makoto Nakane ,  Hideki Nakamura ,  Akira Fukuno

IPC分类号： H01F1/058 ,  H01F1/059

CPC分类号： H01F1/0558 ,  C22C38/001 ,  C22C38/005 ,  C22C38/02 ,  C22C38/10 ,  C22C38/14 ,  H01F1/058 ,  H01F1/0593

摘要： A single phase consisting of a ThMn12 phase can be obtained by having the composition thereof represented by a general formula R(Fe100-y-wCowTiy)xSizAv (in the general formula, R is at least one element selected from rare earth elements (here the rare earth elements signify a concept inclusive of Y), Nd accounts for 50 mol % or more of R, and A is N and/or C) in which the molar ratios in the general formula are such that x=10 to 12.5, y=(8.3−1.7×z) to 12.3, z=0.1 to 2.3, v=0.1 to 3 and w=0 to 30, and the relation (Fe+Co+Ti+Si)/R>12 is satisfied.

摘要翻译： 由ThMn 12相组成的单相可以通过使其组成由通式R（Fe）100-y w / Co （在通式中，R是选自至少一个元素） 来自稀土元素（这里的稀土元素表示包括Y的概念），Nd占R的50mol％以上，A是N和/或C），其中通式中的摩尔比使得 x = 10〜12.5，y =（8.3-1.7×z）〜12.3，z = 0.1〜2.3，v = 0.1〜3，w = 0〜30，关系式（Fe + Co + Ti + Si） 12满足。